davidlares

A basic YAML syntax review concepts

In a short note, YAML files represent configuration data in most of the times. According to Wikipedia: YAML "is a human-friendly data serialization standard for all programming languages". Basically we can say that is similar to XML and JSON notation and it is pretty used on DevOps activities for IaC configurations and for sharing data across multiple applications.

Features

1. key-Value Pair: there's nothing more to say to this. You have a "Key" that acts as an Identification for value itself.

   Here's an example:

Therises

In /usr/share/pulseaudio/alsa-mixer/paths/analog-input-internal-mic.conf and /usr/share/pulseaudio/alsa-mixer/paths/analog-input-mic.conf:

• Under [Element Internal Mic Boost] set volume to zero.
• Under [Element Int Mic Boost] set volume to zero.
• Under [Element Mic Boost] set volume to zero

Find your source name from the following command; mine is alsa_input.pci-0000_00_1f.3.analog-stereo

  $ pacmd list-sources | grep 'name:.*input'

Edit /etc/pulse/default.pa and add the following lines, where INPUT_NAME is name of the input source from above step:

mindplace

1. Make sure git is tracking your project locally

Do you need a refresher on git? Go through Codecademy's git course.

1. Using your terminal/command line, get inside the folder where your project files are kept: cd /path/to/my/codebase. → You cannot do this simply by opening the folder normally, you must do this with the command line/terminal.
   → Do you need a refresher on using your command line/terminal? I've compiled my favorite resources here.

2. Check if git is already initialized: git status

planetoftheweb

$(function() {
  var topoffset = 70; //variable for menu height

  //Use smooth scrolling when clicking on navigation
  $('.navbar-nav a').click(function() {
    if (location.pathname.replace(/^\//,'') === 
      this.pathname.replace(/^\//,'') && 
      location.hostname === this.hostname) {
      var target = $(this.hash);
      target = target.length ? target : $('[name=' + this.hash.slice(1) +']');

lmcneel

How to remove node_modules

Create a .gitignore file

1. Check for an existing .gitignore file in the project directory

ls -a

patrickmmartin

Ubuntu 16 default python is almost python 3

Loads of solutions exist, but for changing the system default, alias is not the way to go.

$ update-alternatives --list python update-alternatives: error: no alternatives for python

AtulKsol

psql: FATAL: Peer authentication failed for user “postgres” (or any user)

The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql. So you will have to create the UNIX user postgres and then login as postgres or use sudo -u postgres psql database-name for accessing the database (and psql should not ask for a password).

If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a socket connection using psql --host=localhost --dbname=database-name --username=postgres (as pointed out by @meyerson answer) will solve your immediate problem.

But if you intend to force password authentication over Unix sockets instead of the peer method, try changing the following pg_hba.conf* line:

from

JacobLett

/* file:///Users/henryhuman/Documents/04_Business/Bootstrap%20Creative/GitHub%20repositories/bootstrap-classes-list/bootstrap4.5.0.html */

.accordion
.active
.alert
.alert-danger
.alert-dark
.alert-dismissible
.alert-heading
.alert-info

carlessanagustin

YAML Syntax for Ansible

• http://docs.ansible.com/ansible/YAMLSyntax.html
• http://docs.ansible.com/

Lists

• Option 1:

cnDelbert

To install tcptraceroute on Debian/Ubuntu:

$ sudo apt-get install tcptraceroute

To install tcptraceroute on CentOS/REHL, first set up RepoForge on your system, and then:

$ sudo yum install tcptraceroute